Singh is best known for her portrayal of Naina Agarwal Maheshwari in Yeh Un Dinon Ki Baat Hai, and dual portrayal of Meet Hooda and Meet Sangwan in Meet: Badlegi Duniya Ki Reet.
2015
Ashi Singh made her television debut through the show Secret Diaries: The Hidden Chapters in 2015.
She was also seen in Gumrah, Crime Patrol and Savdhaan India.
She made a cameo appearance in Qaidi Band as the jailer's daughter.
2017
In 2017, she was selected to play the lead role of Naina Agarwal in SET India's Yeh Un Dinon Ki Baat Hai opposite Randeep Rai.
2019
The show ran successfully until August 2019.
In 2019, Singh featured on the cover of Eastern Eye in its 1500th issue, under the title of "The Future Belongs to Ashi Singh".
2020
In July 2020, after Avneet Kaur quit the show on health basis, Ashi then played Yasmine on Sony SAB's Aladdin – Naam Toh Suna Hoga opposite Siddharth Nigam.
From August 2021 to June 2023, she was seen as Meet Hooda in Zee TV's Meet: Badlegi Duniya Ki Reet opposite Shagun Pandey.
From June 2023 to November 2023, she was seen portraying her former character's daughter Sumeet.
